Ballmer Looks to Microsoft’s Mojo: Steve Ballmer has presided over some tough times at Microsoft. On Thursday, the CEO got a chance to relish in some good news: the launch of the Windows 7 operating system.

AT&T’s Net Dips; iPhone Adds Customers: AT&T’s profit dipped 1.2% as revenue from land lines fell faster than the company could cut costs, but its wireless business added a record number of iPhones to its network.